Metal-cutting shears.



Patented Oct. 26, 1909.

y? N\ ww m, b\ Xu \I.|.|v \N .QN v w\ Q Application llico and adapted to operate in the usual.

ner, being provided with shank-s, one which is provided with a tang adapted to be inserted in a socket 1n a Work bench support the shears in the desired position above the bench, the other shank constituing an operating handleavhich is moved by the operator to cause the cutting action of the shear blades.

The invention has for its object to pr vide shears of this character inwhich the tang on the supporting shank is so located that it will not obstruct the sheet metal body which is being formed by the shears when an elongated practically straight edge is being` cut, so that as the cutting action progresses, the sheet metal body passes rearwardly Ain a direction parallel with' the Shanks.

The invention consists in the improve ments which will now proceed to describe and claim. y

Ot' the accompanying drawings, forming a part of this specificationfmFigui-e l represents a side elevation of a pair of metal-cub ting shears embodying my invention, and a sectional View of a portion of the supporting bench and its tangreceiving 'socket'. Fig. 2 represents an edge View of the shears. F ig. 3 represents a vien7 of the opposite side of the shears from that shown in Fig. l. F ig. 4 represents a section on line Hei of Fig. 1.

The saine reference characters indicate the same parts in all the figures.

In the drawings,-12 and 13 represent metal cutting shear blades of a Well-known form, the blades being connected by a pivot 14, and each having a cutting edge l5. The flat sides 1G of the blades are in rubbing contactw'vith each other, asis 'usual'. in shears of this character. The npperblade 12 is provided with a shank 17, the outer'end of which is provided with a tan 18 adapted to enter a socket 19 in a woriench 20, the

Qpeoziation of Letters Patent april 2.2?,

.Patented @et 1909.,

Serial Hc.

' arrangement of the being such that when it inserted in the socket, the shears are supported above the top ot' the bench in the position shown in Fig. l. The lower blad-e l@ is provided with a shank 21 having a tang at its outer end adapted to bear upon the shank l? when the blades are closed upon each movement ot be blades and preventing conthe shane: 2l with the lower shank 17.

in Fig-2, have shown by dotted lines a `portion sheet metal body 25 from ich a chip or Waste portion .21.1. is being severed by 'the shears, 25 representing the ii. shly ont edge of the body 28, which Vis snpposeo' to passing 1n the dlrectlon 1nf ed by the dotted arrow. in carrying out my invention, bend the in such manner as to offset the enter ends of thereon, rorn the line o' the Getting edges of the blades and the freshly cut edge 25, so that when an elongated ractically straight is being formed, it is adapted to rearwardly along the surface of the bench beside the tang 1S without coming in contact with or being obstructed by said tang. operator is therefore enabled to out forni a vsheet metal body of any desired size Withoutbeing obliged to deflect the portion of the cnt edge passing rearwardly troni the blades in order to enable it to pass by the tang 18.

Heretofore in shears of this character, the shank@ have extended practically in alinenient with die line o cnt, so that the fixed located in such position that it Will .stand in the the freshly cnt edge 25 passing rearwardly from the blades, thus necessitating considerable effort and care on the part. of the Wol-innato in holding the work ont o contact with the fixed tang. My improvement above described obviates this necessity and greatly enhances the con venience oi the Workman.

i claim:

lvietai-.entting shears comprising coperat- `ing shear blades having Shanks one of which has a tang to bear on the 'upper edge of the other shank, said other shank having a tang at its outer end adapted to enter bench socket, the rear portions of both of said other, thus limiting 'the closing tact of the band of the operator grasp1ngshanlrs l? and il laterally, as shown at 26,A

the sbanlrs and the. 18 and 22 formed- Shanks being oset so that the supporting In testimony whereof I have affixed my l tang stands at (ne side (if the line of the ou; signture, in presence of two witnesses.

an is revente from o structing a iece 0 v Work assng backwardly from thepblades', JOSEPH O CHARPENTIER' 5 the other tang being caused by the offset of Witnesses: 1

its shank to operate in a lane to limit the l --NATHL E. MARTIN,

closing movement of the b sides. ALIQE W. HAYLEY. 

